一、軟啟動器的主要參數有什么
軟啟(qi)(qi)動(dong)(dong)器的參數主要有(you)啟(qi)(qi)動(dong)(dong)時(shi)(shi)間,停(ting)止時(shi)(shi)間,啟(qi)(qi)動(dong)(dong)最大電流,啟(qi)(qi)動(dong)(dong)初始電壓。
1、啟(qi)動(dong)(dong)時間(一般(ban)為0.5——60s)是指軟啟(qi)動(dong)(dong)器將電動(dong)(dong)機從停止啟(qi)動(dong)(dong)到全壓全速所需的時間。
2、啟動電(dian)流是指(zhi)電(dian)動機在啟動過程(cheng)中以不超過這個電(dian)流逐步升壓的啟動限制電(dian)流。
3、停止(zhi)時間(jian)是指電(dian)動機(ji)從運行到停止(zhi)所用的(de)時間(jian)。
4、啟(qi)動初(chu)始電壓為啟(qi)動開始時(shi)的輸出電壓。
軟啟動器的參(can)數設定(ding)有(you)的廠家(jia)是(shi)通過面(mian)板的顯示(shi)羼和按鍵,有(you)的廠家(jia)是(shi)通過電(dian)位器來設定(ding)。
二、軟啟動器需要設置哪些參數
一般系統(tong)參(can)數(shu)是廠(chang)家內部的一些參(can)數(shu),作為用(yong)戶是不需要調的。保(bao)護(hu)參(can)數(shu)有欠壓(ya)(ya)保(bao)護(hu)、缺相保(bao)護(hu)、過流(liu)(liu)保(bao)護(hu)、相電(dian)流(liu)(liu)不平衡(heng)保(bao)護(hu)。這些參(can)數(shu)出廠(chang)的時(shi)候(hou)基本已經設置好了,用(yong)戶不需要做大的改動(dong)。只有啟動(dong)參(can)數(shu)是要根據實際啟動(dong)負載做相應的調整。啟動(dong)參(can)數(shu)包(bao)括啟動(dong)方式(shi)、初(chu)始(shi)電(dian)壓(ya)(ya)、限流(liu)(liu)倍數(shu)等,最常(chang)設置的也是這幾種參(can)數(shu)。
1、起(qi)(qi)動方式一般有電壓斜坡起(qi)(qi)動、限(xian)流(liu)起(qi)(qi)動、斜坡限(xian)流(liu)起(qi)(qi)動、突(tu)調電壓起(qi)(qi)動等。
2、初(chu)始電(dian)(dian)(dian)壓(ya)太小(xiao)軟(ruan)啟動(dong)器起(qi)動(dong)電(dian)(dian)(dian)機(ji)(ji)(ji)只聽電(dian)(dian)(dian)機(ji)(ji)(ji)嗡(weng)嗡(weng)響電(dian)(dian)(dian)機(ji)(ji)(ji)不轉,這(zhe)說明力矩太小(xiao),初(chu)始電(dian)(dian)(dian)壓(ya)太大軟(ruan)啟動(dong)器起(qi)動(dong)電(dian)(dian)(dian)機(ji)(ji)(ji)又太猛,失去(qu)了(le)軟(ruan)起(qi)動(dong)的效果,所以初(chu)始電(dian)(dian)(dian)壓(ya)大小(xiao)根據負載輕(qing)重做適當的修(xiu)改(gai)。
3、限流(liu)(liu)(liu)倍數是(shi)指起(qi)動(dong)電(dian)機(ji)(ji)時候,瞬間(jian)電(dian)流(liu)(liu)(liu)控(kong)制(zhi)在額定電(dian)流(liu)(liu)(liu)的倍數內,例如(ru),75KW軟啟動(dong)器限流(liu)(liu)(liu)倍數設置(zhi)成3,380V75KW軟啟動(dong)器額定電(dian)流(liu)(liu)(liu)是(shi)150A,那么(me)起(qi)動(dong)時候,電(dian)機(ji)(ji)電(dian)流(liu)(liu)(liu)控(kong)制(zhi)在450A以(yi)內。限流(liu)(liu)(liu)倍數設置(zhi)過大,對電(dian)網沖(chong)擊較大,設置(zhi)過小,電(dian)機(ji)(ji)啟動(dong)不起(qi)來(lai),所以(yi)這(zhe)個要(yao)根據(ju)實際情況設置(zhi);軟停車功能,是(shi)需要(yao)電(dian)機(ji)(ji)緩慢(man)停下來(lai)的場合進行設置(zhi)的。如(ru)深井(jing)泵(beng),皮(pi)帶機(ji)(ji)。其(qi)余地方(fang)用的比較少。